Table 3. Results of the subgroup analysis by study population.

Study population	SNPs	Inheritance Model	OR	95% CI	P	P(Q test)*
Chinese
	rs12423791
		C vs. G	1.24	1.04–1.48	0.02	0.19
		CC vs. GG	1.39	1.00–1.93	0.05	0.48
		CG vs. GG	1.37	1.12–1.68	0.002	0.48
		CC+CG vs. GG	1.40	1.16–1.69	<.001	0.45
		CC vs. CG+GG	1.17	0.91–1.50	0.21	0.56
	rs6241
		A vs. G	1.05	0.92–1.19	0.50	0.30
		AA vs. GG	1.10	0.87–1.40	0.43	0.37
		AG vs. GG	1.05	0.85–1.29	0.68	0.99
		AA+AG vs. GG	1.06	0.87–1.30	0.54	0.80
		AA vs. AG+GG	1.07	0.88–1.30	0.48	0.24
Japanese
	rs12423791
		C vs. G	0.92	0.78–1.09	0.33	0.15
		CC vs. GG	0.97	0.75–1.26	0.83	0.20
		CG vs. GG	0.91	0.79–1.04	0.17	0.71
		CC+CG vs. GG	0.89	0.76–1.05	0.18	0.25
		CC vs. CG+GG	1.00	0.78–1.29	0.99	0.15
	rs6241
		A vs. G	0.99	0.90–1.10	0.91	0.29
		AA vs. GG	1.01	0.83–1.22	0.96	0.33
		AG vs. GG	1.03	0.86–1.24	0.73	0.56
		AA+AG vs. GG	1.02	0.86–1.21	0.79	0.41
		AA vs. AG+GG	0.98	0.84–1.13	0.74	0.41

*The Q statistic was used to estimate heterogeneity, and a P≤0.10 was considered statistically significant for the Q-statistic test.